.courseDetail {
    height: 50%;

    .courseDetail-title {
        width: 100%;
        background-color: rgba(255, 255, 255, .1);
        height: 50px;
        position: relative;
        top: -335px;
    }

    .icon-play {
        font-size: 50px;
        position: relative;
        top: -75%;
        left: 43%;
    }
}

.introduce {
    height: 50%;

    .introducetop {
        border-bottom: 1px solid #8a8a8a;
    }

}

#newcourseName {
    font-size: 24px;
    font-weight: bold;
}

.frequencyequipment {
    text-align: left;

    .frequency {
        width: 50%;
    }

    .equipment {
        width: 50%;
    }
}

.fcontent {
    width: 50%;
}

.econtent {
    width: 50%;
}

#startBtn {
    position: fixed;
    bottom: 10px;
    width: 90%;
    height: 50px;
    background-color: blue;
    border-radius: 25px;
    color: #fff;
    text-align: center;
    font-size: 20px;
}